Author: Tim Jackson Date: To: exim-users Subject: Re: [exim] Setup for authenticated submission
Andrew - Supernews wrote:
> However, and this is the important point, looking for multiple different
> HELO values from a single ip is a _MASSIVELY_ effective way of detecting
> spam sources. If you configure your server to use a variable HELO then
> you _will_, sooner or later, find that people end up blocking you as a
> result. If you've never used this method of detecting spam (and it takes
> a fairly large mail flow into several domains to really do it right) you
> would not believe how amazingly effective it can be.
Do you have any recipes/examples for doing this that you would be
willing to share?
